Hi Tim, who do you work With? Rolls Royce, Bombardier and Toyota are the likely candidates in Derby. Is it one of those?
Be sure to call the cable at Holme Pierrpont (near Nottingham) before turning up as it is small and often fully booked. The telephone number is 0115 9821212.
If you like cable and have a car, it would be worth driving north up the M1 motorway (like a highway only faster) to Sheffield Cable - highly recommended.
http://www.sheffieldcablewaterski.com/ Going south down the M1 is WakeMK at Milton Keynes. Again, well worth the trip.
http://www.wakemk.com/ Either of these offer much more in the way of sliders etc. than the Nottingham cable.
Be prepared to be shocked at the cost of riding behind a boat over here. A fifteen minute set is around GBP22-25 behind the club boat at my local lake - that's around USD40-45!!!
Finally, get in touch when you are over and we'd be pleased to have you ride with us. We have a crappy boat and can't ride for sh** but we still have fun. We ride here:
http://www.wmwaterski.com/ (btw, check out the webcam)